Think Tutorial is a site providing free, easy to follow tutorials on a variety of web services, software, and mobile applications. Think Tutorials offers over 1000 videos. For teachers you will find a section of Moodle and Blackboard tutorials!
Learn it in 5 is a powerful library of how-to videos, produced by technology teachers, for the purpose of helping teachers and students create classroom strategies for today's 21st century's digital classroom.
I have been using Edmodo this year with my classes. Edmodo is a secure social learning network which provides free communication for administrators, teachers, students and parents. It provides an easy way to store and share classroom materials, links, and videos. I set up assignments and my students can turn in their completed assignment, I can grade it from anywhere. I love it and so do my students.